My common pleco was just a baby when we got him (about 2 inches, maybe?) and now he seems to have doubled in size in the last 2-3 weeks. We have been finding fry in our tank from our livebearers, but not many. could he be eating them? The guy at petsmart said plecos don't eat much meat and prefer veggies, but I'm really starting to wonder. anyone seen this before?